Are Progressive Web Apps allowed to send push notifications by default once installed?

Today i installed some PWAs from appsco.pe and each one that has been installed has the notifications set to "allowed" by default (this is visible by checking the app permissions / details from mobile).

The weird thing is that by going to settings > notifications on Chrome mobile browser, the PWAs are not even listed among the sites that have web push permissions (which is correct as i didn't give any permission).

So i'm a bit confused, is it my smartphone that has something wrong or is it effectively a new feature for PWAs?